Wood frame beam-column self-resetting joint based on shape memory alloy bolts

Abstract

The invention relates to a wood frame beam-column self-resetting joint based on shape memory alloy bolts. The wood frame beam-column self-resetting joint comprises a wood column, a wood beam and two pieces of angle steel, the wood column and the wood beam are perpendicularly arranged, and the two pieces of connecting angle steel are arranged on the upper side and the lower side of the wood beam correspondingly. The two sides of each piece of connecting angle steel are tightly attached to the wood column and the wood beam correspondingly, the joint further comprises the shape memory alloy self-resetting bolts and an inlaid steel plate, and the shape memory alloy self-resetting bolts penetrate through the wood column to enable the wood column and one sides of the pieces of connecting angle steel to be connected. The other sides of the pieces of connecting angle steel and the wood beams are connected through self-tapped screws, a wood column notch is formed in the wood column, and a woodbeam notch is formed in the wood beam. One part of the inlaid steel part is inlaid in the wood column notch, and the other part of the inlaid steel plate is inlaid into the wood beam notch. The inlaidsteel plate and the wood column are connected through wood column connecting bolts, and the inlaid steel plate and the wood beam are connected through wood beam connecting bolts. Compared with the prior art, according to the joint, the important anti-seismic functions of lateral force resistance, self-resetting, energy consumption and the like are integrated.

Description

technical field [0001] The invention belongs to the technical field of anti-seismic and shock-absorbing technology of structural engineering, and in particular relates to a beam-column self-resetting node of a wooden frame based on shape-memory alloy bolts. Background technique [0002] The heavy timber framing system is a form of construction widely used in countries around the world, consisting of timber members with large spacing and large cross-sections. The structural system can effectively combine architectural functions and wood aesthetics, and is suitable for residential and public buildings. The heavy wood frame system has the following structural advantages: flexible design, simple and quick construction, good wind resistance, good durability, energy saving and environmental protection, comfortable and beautiful, and has broad application prospects in our country. The beams and columns of the heavy wood frame are currently mainly connected by bolts and steel fille...

AI Technical Summary

Problems solved by technology

[0003] 1) Under the action of earthquakes, the failure mode of beam-column joints of heavy-duty wooden frames is often unpredictable. When the wood enters plasticity, it is difficult to repair, and the structure produces large residual deformation and poor energy dissipation performance. Although it can guarantee the use of The safety of the occupants, but the structure is often unable to be used again after the earthquake, causing great economic losses

[0004] 2) The bolt-steel fill plate joints have relatively low stiffness, and are designed as hinged joints in the design. Insufficient joint stiffness is a restrictive factor for heavy wood frame structures, especially for multi-storey heavy wood frame structures that require a large number of supports. To a certain extent, it affects the beauty of the structure, and also makes its building performance greatly reduced.

[0005] 3) If the permanent deformation of the joint is too large, the feasibility of repair may be lost, so that the entire structure is forced to be demolished after the earthquake

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